"key rationale" is correct and usable in written English.
You can use it when you need to refer to the primary reasons for a decision or opinion. For example, "The key rationale for investing in stocks was to have a steady income stream."
What was a key rationale for going to war? k.
A key rationale is that if a family develops the plan, they will be more likely to adhere to it.
The key rationale for reducing the U.S. defense budget was the fall of the Berlin Wall and the subsequent fall of Communist governments in East Germany and the rest of Eastern Europe in late 1989.
It describes the key rationale, characteristics, and process parameters of the currently used scaffold fabrication techniques.
The key rationale, characteristics, and process parameters of the currently used scaffold fabrication techniques are presented.
The key rationale in bringing these fairly disconnected bodies of literature together is that there is much to be learnt across these broad fields of knowledge.
It is starting to appear as if one of Treasury's key rationales for the recapitalization program — namely, that it will cause banks to start lending again — is a fig leaf, Treasury's version of the weapons of mass destruction.
By a five-to-four vote, the Court eliminated what grade-school children have traditionally been taught was one of the key rationales for founding the United States in the first place.
Worse, because the U.S. solved the problems of appropriability and time horizons indirectly, there never crystallized an explicit ideological consensus in this country about these being the key rationales for active industrial policy.
In conclusion, this chapter provides a short overview of key rationales and trends in modern fly genetics.
One of the key rationales for a beneficial role of fibrates in cholangiopathies may be upregulation of MDR3 and its subcellular redistribution toward the canalicular membrane, thereby increasing the biliary content of phosphatidylcholine and reducing the aggressive potential of BAs in bile, subsequently protecting the biliary tree.
